Fix bug in backend for Cloudera start/stop every service
Fix bug in backend for Cloudera start/stop every service

KPetsas/e-science,VFoteinos/e-science,VFoteinos/e-science,VFoteinos/e-science,ioannisstenos/e-science,VFoteinos/e-science,ioannisstenos/e-science,ioannisstenos/e-science,KPetsas/e-science,KPetsas/e-science,KPetsas/e-science,KPetsas/e-science,grnet/e-science,grnet/e-science,ibyron/e-science,ibyron/e-science,ibyron/e-science,ioannisstenos/e-science,ibyron/e-science,VFoteinos/e-science,ioannisstenos/e-science,grnet/e-science,grnet/e-science,ibyron/e-science,grnet/e-science